// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// e32\common\arm\atomic_8_16_32_irq.h

// 8, 16 and 32 bit kernel side atomic operations on V5 or V6 processors

// These work by disabling interrupts

// 

//

#include "atomic_ops.h"

#if defined(__OP_LOAD__)

#error Load operation not defined

#elif defined(__OP_STORE__)

#error Store operation not defined

#elif defined(__OP_RMW1__)

#if defined(__OP_SWP__)

#define	__DO_PROCESSING__

#elif defined(__OP_ADD__)

#define	__DO_PROCESSING__	asm("add r1, r0, r1 ");

#elif defined(__OP_AND__)

#define	__DO_PROCESSING__	asm("and r1, r0, r1 ");

#elif defined(__OP_IOR__)

#define	__DO_PROCESSING__	asm("orr r1, r0, r1 ");

#elif defined(__OP_XOR__)

#define	__DO_PROCESSING__	asm("eor r1, r0, r1 ");

#endif

extern "C" EXPORT_C __NAKED__ __TYPE__ __fname__(__OPERATION__,rel,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=v

	// return value in R0

	// just fall through

	}

extern "C" EXPORT_C __NAKED__ __TYPE__ __fname__(__OPERATION__,rlx,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=v

	// return value in R0

	// just fall through

	}

extern "C" EXPORT_C __NAKED__ __TYPE__ __fname__(__OPERATION__,ord,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=v

	// return value in R0

	// just fall through

	}

extern "C" EXPORT_C __NAKED__ __TYPE__ __fname__(__OPERATION__,acq,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=v

	// return value in R0

	asm("mov r3, r0 ");

	__DISABLE_INTERRUPTS__(r12,r2);

	__LDR_INST__( ," r0, [r3] ");

	__DO_PROCESSING__

	__STR_INST__( ," r1, [r3] ");

	__RESTORE_INTERRUPTS__(r12);

	__JUMP(,lr);

	}

#undef __DO_PROCESSING__

#elif defined(__OP_CAS__)

extern "C" EXPORT_C __NAKED__ TBool __fname__(__OPERATION__,rel,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ * /*q*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=q, R2=v

	// return value in R0

	// just fall through

	}

extern "C" EXPORT_C __NAKED__ TBool __fname__(__OPERATION__,rlx,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ * /*q*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=q, R2=v

	// return value in R0

	// just fall through

	}

extern "C" EXPORT_C __NAKED__ TBool __fname__(__OPERATION__,ord,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ * /*q*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=q, R2=v

	// return value in R0

	// just fall through

	}

extern "C" EXPORT_C __NAKED__ TBool __fname__(__OPERATION__,acq,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ * /*q*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=q, R2=v

	// return value in R0

	asm("str r4, [sp, #-4]! ");

	__LDR_INST__( ," r4, [r1] ");

	__DISABLE_INTERRUPTS__(r12,r3);

	__LDR_INST__( ," r3, [r0] ");

	asm("cmp r3, r4 ");

	__STR_INST__(eq," r2, [r0] ");

	__RESTORE_INTERRUPTS__(r12);

	__STR_INST__(ne," r3, [r1] ");

	asm("ldr r4, [sp], #4 ");

	asm("movne r0, #0 ");

	asm("moveq r0, #1 ");

	__JUMP(,lr);

	}

#elif defined(__OP_AXO__)

extern "C" EXPORT_C __NAKED__ __TYPE__ __fname__(__OPERATION__,rel,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ /*u*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=u, R2=v

	// return value in R0

	// just fall through

	}

extern "C" EXPORT_C __NAKED__ __TYPE__ __fname__(__OPERATION__,rlx,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ /*u*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=u, R2=v

	// return value in R0

	// just fall through

	}

extern "C" EXPORT_C __NAKED__ __TYPE__ __fname__(__OPERATION__,ord,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ /*u*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=u, R2=v

	// return value in R0

	// just fall through

	}

extern "C" EXPORT_C __NAKED__ __TYPE__ __fname__(__OPERATION__,acq,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ /*u*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=u, R2=v

	// return value in R0

	asm("mov r3, r0 ");

	__DISABLE_INTERRUPTS__(r12,r0);

	__LDR_INST__( ," r0, [r3] ");

	asm("and r1, r0, r1 ");

	asm("eor r1, r1, r2 ");

	__STR_INST__( ," r1, [r3] ");

	__RESTORE_INTERRUPTS__(r12);

	__JUMP(,lr);

	}

#elif defined(__OP_RMW3__)

extern "C" EXPORT_C __NAKED__ __TYPE__ __fname__(__OPERATION__,rel,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ /*t*/, __TYPE__ /*u*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=t, R2=u, R3=v

	// return value in R0

	// just fall through

	}

extern "C" EXPORT_C __NAKED__ __TYPE__ __fname__(__OPERATION__,rlx,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ /*t*/, __TYPE__ /*u*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=t, R2=u, R3=v

	// return value in R0

	// just fall through

	}

extern "C" EXPORT_C __NAKED__ __TYPE__ __fname__(__OPERATION__,ord,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ /*t*/, __TYPE__ /*u*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=t, R2=u, R3=v

	// return value in R0

	// just fall through

	}

extern "C" EXPORT_C __NAKED__ __TYPE__ __fname__(__OPERATION__,acq,__DATA_SIZE__)(volatile TAny* /*a*/, __TYPE__ /*t*/, __TYPE__ /*u*/, __TYPE__ /*v*/)

	{

	// R0=a, R1=t, R2=u, R3=v

	// return value in R0

	asm("mov r12, r0 ");

	asm("str r4, [sp, #-4]! ");

	__DISABLE_INTERRUPTS__(r4,r0);

#if	defined(__OP_TAU__)

	__LDR_INST__( ," r0, [r12] ");

	asm("cmp r0, r1 ");

	asm("addcs r1, r0, r2 ");

	asm("addcc r1, r0, r3 ");

#elif	defined(__OP_TAS__)

	__LDRS_INST__( ," r0, [r12] ");

	asm("cmp r0, r1 ");

	asm("addge r1, r0, r2 ");

	asm("addlt r1, r0, r3 ");

#endif

	__STR_INST__( ," r1, [r12] ");

	__RESTORE_INTERRUPTS__(r4);

	asm("ldr r4, [sp], #4 ");

	__JUMP(,lr);

	}

#endif

// Second inclusion undefines temporaries

#include "atomic_ops.h"